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私がペイパルの既存の例に従っていたとき、ペイパルのエクスプレスチェックアウトで注文情報を取得できません。

/** SetExpressCheckout NVP example; last modified 08MAY23.
 *
 *  Initiate an Express Checkout transaction. 
*/

$environment = 'sandbox';   // or 'beta-sandbox' or 'live'

/**
 * Send HTTP POST Request
 *
 * @param   string  The API method name
 * @param   string  The POST Message fields in &name=value pair format
 * @return  array   Parsed HTTP Response body
 */
function PPHttpPost($methodName_, $nvpStr_) {
    global $environment;

    // Set up your API credentials, PayPal end point, and API version.
    $API_UserName = urlencode('super_secret_username');
    $API_Password = urlencode('super_secret_password');
    $API_Signature = urlencode('super_secret_signature');
    $API_Endpoint = "https://api-3t.paypal.com/nvp";
    if("sandbox" === $environment || "beta-sandbox" === $environment) {
        $API_Endpoint = "https://api-3t.$environment.paypal.com/nvp";
    }
    $version = urlencode('51.0');

    // Set the curl parameters.
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $API_Endpoint);
    curl_setopt($ch, CURLOPT_VERBOSE, 1);

    // Turn off the server and peer verification (TrustManager Concept).
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);

    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_POST, 1);

    // Set the API operation, version, and API signature in the request.
    $nvpreq = "METHOD=$methodName_&VERSION=$version&PWD=$API_Password&USER=$API_UserName&SIGNATURE=$API_Signature$nvpStr_";

    // Set the request as a POST FIELD for curl.
    curl_setopt($ch, CURLOPT_POSTFIELDS, $nvpreq);

    // Get response from the server.
    $httpResponse = curl_exec($ch);

    if(!$httpResponse) {
        exit("$methodName_ failed: ".curl_error($ch).'('.curl_errno($ch).')');
    }

    // Extract the response details.
    $httpResponseAr = explode("&", $httpResponse);

    $httpParsedResponseAr = array();
    foreach ($httpResponseAr as $i => $value) {
        $tmpAr = explode("=", $value);
        if(sizeof($tmpAr) > 1) {
            $httpParsedResponseAr[$tmpAr[0]] = $tmpAr[1];
        }
    }

    if((0 == sizeof($httpParsedResponseAr)) || !array_key_exists('ACK', $httpParsedResponseAr)) {
        exit("Invalid HTTP Response for POST request($nvpreq) to $API_Endpoint.");
    }

    return $httpParsedResponseAr;
}

// Set request-specific fields.
$paymentAmount = urlencode('105.87');
$currencyID = urlencode('USD');                         // or other currency code ('GBP', 'EUR', 'JPY', 'CAD', 'AUD')
$paymentType = urlencode('Authorization');              // or 'Sale' or 'Order'

$returnURL = urlencode("http://localhost/paypal/new/success.php");
$cancelURL = urlencode('http://localhost/paypal/new/cencel.php');

// Add request-specific fields to the request string.
$nvpStr = "&Amt=$paymentAmount&ReturnUrl=$returnURL&CANCELURL=$cancelURL&PAYMENTACTION=$paymentType&CURRENCYCODE=$currencyID";


// Execute the API operation; see the PPHttpPost function above.
$httpParsedResponseAr = PPHttpPost('SetExpressCheckout', $nvpStr);

if("SUCCESS" == strtoupper($httpParsedResponseAr["ACK"]) || "SUCCESSWITHWARNING" == strtoupper($httpParsedResponseAr["ACK"])) {
    // Redirect to paypal.com.
    $token = urldecode($httpParsedResponseAr["TOKEN"]);
    $payPalURL = "https://www.paypal.com/webscr&cmd=_express-checkout&token=$token";
    if("sandbox" === $environment || "beta-sandbox" === $environment) {
        $payPalURL = "https://www.$environment.paypal.com/webscr&cmd=_express-checkout&token=$token";
    }
    header("Location: $payPalURL");
    exit;
} else  {
    exit('SetExpressCheckout failed: ' . print_r($httpParsedResponseAr, true));
}

このスクリプトを使用して、注文の合計を取得するにはどうすればよいですか。

Payal Express Checkout を使用した Paypal 定期支払いのスクリプトが必要です。また、定期支払いを更新してキャンセルする必要があります。

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